Lietava, Lietauka or Letauka, is a rivulet in Lithuania that is believed to have given Lithuania its name. It is 11 km in length and flows into Neris 30 km away from Kernavė, a possible first capital of the Grand Duchy of Lithuania. It flows through a swampy region and no important archaeological findings have been discovered on its banks. Since the stream flows in the lowlands and easily spills over its banks, most linguists agree that Lithuania's name (Lietuva) is related, and perhaps derived from Lithuanian verb lieti, of the root derived from the Proto-Indo-European *leyǝ-.